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People always are learning and practicing through their whole lives.
From reading words in text book such as toy, car, train etc., people have
the concept and ideas. They further understand the actual meaning of
these words by playing toys and riding or driving cars, trains etc.

Education (books) and experience are the main two channels for People
to gain their knowledge. Each play different roles for people. In my
opinion, knowledge from experience is more important than that from books.

Experience first can prove if the knowledge form books are true or false.
Textbooks are very wonderful in teaching people essential principles, how
is the world looks like? what is the basic law of change of people and
things? We can learn a lot through primary school, secondary school until
university. However, people can only understand the really meaning of
those form books and justify them if they are right through practices. A
few hundred years ago, people learnt from text book that the earth was
flat. However scientists found that was wrong through observations and
measurement.

The knowledge from experience can improve and advance
the world and our society. As books have limitation, they only teach us
the what people found in the past. The knowledge from the books are
constrained to the certain conditions and environment. For example, mould
and tools design for plastics industry, the university course only taught
me very simple cases, most knowledge are obtained from various different
and complicated cases in my career.

There are a lot new inventions and new products which could not be
found from textbooks. Our society and world are developed through
continuous practices, those knowledge, never found in books, such as internet,
e-business etc. are all developed through new practices.

"The truth comes from practices and experience", people are continually
discovering new things and assessing the creditability of the knowledge
written in books. The knowledge from experience help us much more than
those from books.